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Character - Thunderbolt Ross EDIT  

General Thunderbolt Ross has been hulks enemy from the very begging, so if you are interested in his Human Side, it would be wise to read bill mantlos run on the hulk, where ross goes to many lengths to get rid of the hulk.

Jeph Loebs Hulk Gray would also be wise to read , since the prime characters were betty, Bruce, Leonard and Ross.

But if you want ross's current adventures, Jeph Loebs HULK series might interest you, followed by Jeff Parkers amazing Run on the Red Hulk.